2 results about "Active enzyme" patented technology

The invention discloses a biological reader capable of rapidly verifying the sterilizing effect. The biological reader mainly comprises an excitation light source, a fluorescent light filtering disc system, an optical signal acquisition system, a fluorescent biological indicator, a temperature control system, an image processing system and an output result; the main principle and the working process of the biological reader are as follows: a biological indicator after sterilization is inserted into the biological reader, spores germinate in a culture solution at appropriate temperature under the action of a germination accelerator, an active enzyme is generated and reacts with an added fluorescent material in a culture medium, the excitation light source emits excitation light with the specific wavelength and irradiates the fluorescent biological indicator, the fluorescent material in the fluorescent biological indicator can emit fluorescent light with the specific wavelength after excitation, the fluorescent light is captured and imaged by a high-sensitivity digitized CCD, and an image processing system can process, compare and analyze acquired image information and judge whether the sterilization is effective within a short time.

The invention provides a preparation method of Guizhou high-fragrance black tea. The preparation method comprises the following steps: picking tea leaves; soaking tea leaves; spreading the tea leaves;twisting the tea leaves; fermenting the tea leaves; shaping the tea leaves; drying the tea leaves. According to the preparation method of Guizhou high-fragrance black tea, based on the prior art, a soaking and washing step is added, and twisting is carried out under a low-temperature condition, so that deactivation of active enzyme due to high-temperature fermentation can be avoided, and the fermentation activity is higher; in addition, according to the fermentation properties of the tea leaves, three-step fermentation is adopted, and the prepared tea leaves have the advantages that the colorof made tea is ruddy, the tea is more red and dense in color and is more bright-colored, the fragrant smell is heavier and mellower and is more lasting, the taste is mellower, more smooth, and more dense, and the bottom parts of the tea leaves are more red and brighter.